Mystery Monday to Sunday: The Ultimate Week‑Long Guide to What to Watch on GREAT! Mystery

Below is a day‑by‑day snapshot of the channel’s top mystery and thriller offerings. Times are shown in London (BST) in HH:MM format, with the date and day of week appended for easy reference.

Monday – 10 Aug 2026 (Tuesday)

• Family History Mysteries: Buried – 09:10 BST (10 Aug 2026) – Janel Parrish digs into a family’s past for a life‑saving mission. The investigation uncovers buried secrets that threaten to surface. Opinion: A heart‑tugging dive into genealogy that keeps you glued to the screen. The stakes rise as hidden truths emerge.
• Hailey Dean Mysteries: A Will… – 11:10 BST – Past and present collide in a murder mystery that involves a missing student and a 15‑year‑old crime. Opinion: The pacing is solid, though the plot twists feel predictable for seasoned sleuth fans.
• Unforgettable – 12:10 BST – Crime drama with Carrie and Al investigating a murder that may be more than a robbery. Opinion: One of the more reliable shows on the schedule, its suspenseful storytelling is consistent.
• In Plain Sight – 13:10 BST – Mary and her team protect a witness while juggling personal drama. Opinion: The show balances action and character depth nicely.
• Castle – 14:10 BST – Series‑4 episode dealing with a bomb at a Wall‑Street rally. Opinion: A reliable entry that delivers the usual mix of humor and intrigue.
• Diagnosis Murder – 15:10 BST – Doctor Sloan confronts a four‑year‑old’s death under his care. Opinion: The medical mystery keeps the audience engaged through a tense investigation.

Tuesday – 11 Aug 2026 (Wednesday)

• Family History Mysteries: Buried – 09:10 BST – Continuing the family saga with new revelations. Opinion: The narrative deepens, though some viewers may find the pacing a tad slow.
• Hailey Dean Mysteries: Death On… – 09:10 BST – Exploring a disappearance linked to a 15‑year‑old murder. Opinion: The case is gripping, but the pacing is uneven.
• Unforgettable – 11:10 BST – Investigating a kidnapped child and a hostile classmate. Opinion: One of the better options in the lineup.
• In Plain Sight – 12:10 BST – Mary deals with a rock‑star witness. Opinion: A steady drama that keeps viewers interested.
• Castle – 13:10 BST – Team tackles a case with a DI from Scotland Yard. Opinion: The banter remains one of the show’s staples.
• Diagnosis Murder – 14:10 BST – Team faces a series of hospital murders. Opinion: A reliable segment for fans of medical suspense.

Wednesday – 12 Aug 2026 (Thursday)

• Family History Mysteries: Buried – 09:10 BST – Further probing into ancestral secrets. Opinion: Still entertaining, though some plot points feel repetitive.
• Hailey Dean Mysteries: Death On… – 09:10 BST – Uncovering the truth behind a missing student. Opinion: The narrative keeps tension high.
• Nanny Beware – 01:10 BST – A thriller about a kidnapped child. Opinion: Adds variety to the evening’s lineup.
• Fatal Verdict – 02:30 BST – DA faces threats after a murder conviction is overturned. Opinion: Adds a layer of legal intrigue.
• The Threat Next Door – 03:50 BST – Single mother faces a dangerous neighbour. Opinion: A tense thriller that keeps the audience on edge.
• Teleshopping – 04:00 BST – Shop‑the‑world segments. Opinion: A filler that keeps viewers’ attention low.

Thursday – 13 Aug 2026 (Friday)

• Family History Mysteries: Buried – 09:10 BST – Further genealogy twists. Opinion: A reliable option for mystery lovers.
• Hailey Dean Mysteries: Death On… – 09:10 BST – Case deepens with new clues. Opinion: Keeps the intrigue alive.
• My Stepfather’s Secret – 02:25 BST – College student discovers new fiancé. Opinion: Adds dramatic tension.
• Fatal Justice – 03:50 BST – Crime thriller following a robbery and a coma. Opinion: A solid thriller that holds up well.
• Good News on GREAT! – 07:10 BST – Positive round‑up of uplifting stories. Opinion: Offers a brief respite from the drama.
• Teleshopping – 04:00 BST – Shop‑the‑world segments. Opinion: A filler that keeps viewers’ attention low.

Friday – 14 Aug 2026 (Saturday)

• Family History Mysteries: Buried – 09:10 BST – New revelations in the family saga. Opinion: The narrative remains engaging.
• Hailey Dean Mysteries: Death On… – 09:10 BST – Further investigation into the missing student case. Opinion: Keeps viewers glued.
• Off The Rails – 00:45 BST – After a train wreck, a woman’s memory is shattered. Opinion: Adds psychological intrigue.
• My Stepfather’s Secret – 02:25 BST – College student’s new fiancé adds drama. Opinion: A solid addition for fans of romance‑thriller mash‑ups.
• Good News on GREAT! – 07:10 BST – Uplifting stories. Opinion: A reliable brief break.
• Teleshopping – 04:00 BST – Shop‑the‑world segments. Opinion: Filler content.

Saturday – 15 Aug 2026 (Sunday)

• Family History Mysteries: Buried – 09:10 BST – Family secrets reach a climax. Opinion: The story stays tight.
• Hailey Dean Mysteries: Death On… – 09:10 BST – Case resolution approaches. Opinion: Keeps the suspense high.
• Good News on GREAT! – 07:10 BST – Positive news roundup. Opinion: A short, uplifting moment.
• Teleshopping – 04:00 BST – Shop‑the‑world segments. Opinion: Low‑engagement filler.

Sunday – 16 Aug 2026 (Monday)

• Family History Mysteries: Buried – 09:10 BST – Final family revelations. Opinion: The episode concludes with a satisfying twist.
• Hailey Dean Mysteries: Death On… – 09:10 BST – Final twists resolved. Opinion: A satisfying end to the arc.
• Good News on GREAT! – 07:10 BST – Positive news roundup. Opinion: A brief uplifting break.
• Teleshopping – 04:00 BST – Shop‑the‑world segments. Opinion: Filler content.

Recommendations

For kids and teens: Good News on GREAT! offers a quick, feel‑good break from the intense drama. For adults craving crime, Unforgettable and In Plain Sight deliver steady mystery beats. Thriller lovers should line up Fatal Verdict and The Threat Next Door for spine‑ticking moments. If you prefer a cozy mystery, Family History Mysteries: Buried balances history with intrigue.

Bottom line: This week on GREAT! Mystery offers a mix of gripping, character‑driven detective work and high‑stakes thriller segments. Pick the genre that fits your mood and enjoy a consistently engaging lineup. The channel’s schedule ensures something for every mystery aficionado.